gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/test/syscalls/linux/sync.cc (about)

     1  // Copyright 2018 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  #include <fcntl.h>
    16  #include <stdio.h>
    17  #include <sys/syscall.h>
    18  #include <unistd.h>
    19  
    20  #include <string>
    21  
    22  #include "gtest/gtest.h"
    23  #include "test/util/temp_path.h"
    24  #include "test/util/test_util.h"
    25  
    26  namespace gvisor {
    27  namespace testing {
    28  
    29  namespace {
    30  
    31  TEST(SyncTest, SyncEverything) {
    32    ASSERT_THAT(syscall(SYS_sync), SyscallSucceeds());
    33  }
    34  
    35  TEST(SyncTest, SyncFileSytem) {
    36    int fd;
    37    auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile());
    38    ASSERT_THAT(fd = open(f.path().c_str(), O_RDONLY), SyscallSucceeds());
    39    EXPECT_THAT(syncfs(fd), SyscallSucceeds());
    40    EXPECT_THAT(close(fd), SyscallSucceeds());
    41  }
    42  
    43  TEST(SyncTest, SyncFromPipe) {
    44    int pipes[2];
    45    EXPECT_THAT(pipe(pipes), SyscallSucceeds());
    46    EXPECT_THAT(syncfs(pipes[0]), SyscallSucceeds());
    47    EXPECT_THAT(syncfs(pipes[1]), SyscallSucceeds());
    48    EXPECT_THAT(close(pipes[0]), SyscallSucceeds());
    49    EXPECT_THAT(close(pipes[1]), SyscallSucceeds());
    50  }
    51  
    52  TEST(SyncTest, CannotSyncFileSystemAtBadFd) {
    53    EXPECT_THAT(syncfs(-1), SyscallFailsWithErrno(EBADF));
    54  }
    55  
    56  TEST(SyncTest, CannotSyncFileSystemAtOpathFD) {
    57    const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith(
    58        GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode));
    59    const FileDescriptor fd =
    60        ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_PATH));
    61  
    62    EXPECT_THAT(syncfs(fd.get()), SyscallFailsWithErrno(EBADF));
    63  }
    64  }  // namespace
    65  
    66  }  // namespace testing
    67  }  // namespace gvisor